code: def _find_config_res_source(opdef, config_src):
      config_source_uri = f"config:{config_src}"
      for resdef in op_util.iter_opdef_resources(opdef):
          for source in resdef.sources:
              if source.uri == config_source_uri:
                  return source
      return None
  
imports: import logging
  import os
  from guild import guildfile
  from guild import op_util
  from guild import plugin
  from guild import util
  from .None import flags_import_util
label_desc: Use image node_id 12 for calling a global function with example usage: _find_config_res_source(opdef, config_src) and returns: None, source